https://sourceware.org/bugzilla/show_bug.cgi?id=16279
Bug ID: 16279
Summary: Need a way to create two COFF sections with the same
name but different comdats
Product: binutils
Version: unspecified
Status: NEW
Severity: enhancement
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: rafael.espindola at gmail dot com
On ELF one can easily create two sections with the same name in different
comdats:
-
.sectionfoo,"axG",@progbits,f,comdat
.globl f
f:
ret
.sectionfoo,"axG",@progbits,g,comdat
.globl g
g:
ret
-
on COFF that is not possible since the .section directive doesn't include the
comdat information (that is part of the .linkonce directive). This means that a
compiler using gas needs to produce unique names, producing more complex .obj
files than the ones produced by msvc, which, for example, have all c++ inline
functions in sections named .text.
The assembler included in LLVM solved this by allowing the information normally
passed to .linkonce to be passed to .section itself:
http://llvm.org/docs/Extensions.html#section-directive
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